For the past several years, the mean literacy-achievement score for a population of third-grade students has been 45 with a population standard deviation of 15. A researcher is interested in

whether an experimental teaching program is more or less effective than current teaching methods for literacy. After participating in the experimental teaching program, a random sample of 100students had a mean score of 48.75. . Formulate and test the appropriate hypotheses using the P-value null hypothesis at =0.05? What would be your conclusion, explained within the context of the approach. Would you reject the test? 0.01? What would be your conclusion, explain ede. Would you reject the null hypothesis at =within the context of the test? How strong is the evidence against ho